@inproceedings{TUW-111565, author = {Flandrin, P. and Hlawatsch, Franz}, title = {Signal representations geometry and catastrophes in the time-frequency plane}, booktitle = {Mathematics in Signal Processing, Eds. T.S. Durrani et al., Clarendon Press Oxford, UK, 1987}, year = {1985}, pages = {3--14}, url = {http://publik.tuwien.ac.at/files/pub-et_12537.pdf}, note = {talk: IMA Conference ''Mathematics in Signal Processing'', Bath, UK; 1985-09-00} }